. >> today's tragedy hit hard, a team from newtown wanted to honor victims of the sandy hook shooting. the runners dedicated each of the 26 miles to the 26 victims. there was a moment of silence, and the newtown seal was placed at the 26 mile mark. all of the runners representing newtown were not injuried in the explosions. >> we are hearing the audio calls. jim henley has more on the chaos and the confusion from the scene today. >> dozens of victims, bags abandoned in that chaos. blocked roadways and of course, the huge crowds. posted online, can you hear the tense moments after the explosions, as first respenders tried to get all units to the scene around the finish line. >> i want one road cleared, ambulances in and out. i need lanes open here. >> boylston, we need to set up a perimeter. get people away. >> get everybody out there. use kagz, there may be additional devices. use caution. >> i need someone on social media, let people know. we are sweeping the street to make sure it is safe. get them out once it is swept. we have all the victims off the scene. >> we are finishing the